According to the National Center for Health Statistics, the average weight for an adult woman (20 years old and older) in the United States is 168.5 pounds.This statistic is from the National Health and Nutrition Examination Survey (NHANES) conducted from 2011-2014.
An adult human cadaver head cut off around vertebra C3, with no hair, weighs on average somewhere between 4.5 and 5 kg, typically constituting around 8% of the body mass.
"An adult human head cut off around vertebra C3, with no hair, weighs somewhere between 4.5 and 5kg, constituting around 8% of the whole body mass." 4.5kg-5kg: Goldstein, Jonathan P. Goldstein Helmet Study. Biker's Rights. May-June 2006. "The weight of the human head is 8-12 pounds while the average weight of the helmet used in our sample is 2.
Jul 16, 2018 · About 10 lbs. If you hold it by the hair and let the blood drain, maybe less. This should be good for planning purposes when you load a catapult full of enemy heads to fling back at them. Don’t use a cannon. The heads will be vaporized. No fun.